<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

</head>
<body>
<div id="target" style="position:absolute; top: 100px; left: 100px; width: 100px; height: 100px; background: #a0dde9; padding: 1em;">
    hello world!
</div>
<script src="./js/Tween.js"></script>
<script src="./js/RequestAnimationFrame.js"></script>\
<script>
    var position;
    var target;
    var tween,tweenBack;

    init();
    animate();

    function init(){}
    position={x:100,}
</script>

</body>
</html>